CTS CHILLED Tower™ A Series
Piping Components Business Unit
This chilled tower system, used to cool semiconductor-production equipment, is compared below with the air-cooled chiller in terms of power requirement, annual power consumption and annual running costs.
< Operating parameters >
| Heat needed for cooling purposes | 209.3kW (180,000kcal/h) |
|---|---|
| Water volume | 36m3/h (600 l/min) |
| Water temperature at inlet | 25°C |
| Water temperature at outlet | 20°C |
| Operating time | 24 hours, 365 days |
| Meteorological conditions | Those of Kanto region |
| Electricity rates | 10 yen/kW・h |
| Basic electricity rates | 1,550 yen/kW・Month |
Below are diagrammatic overviews of the two systems, with performance details listed below them in Chart 1.
Figure 1: Chilled tower system
Figure 2: Air-cooled chiller system
Chart 1: Estimated power requirement, annual power consumption and annual running costs
| Unit | Chilled tower™ | Air-cooled chiller | |
|---|---|---|---|
| Power requirement | kW | 76.6 | 91.5 |
| Annual power consumption |
kW・h | 268,726 | 645,100 |
| Water consumption | m3 | 0 | 0 |
| Annual electricity rates | ¥ | 2,687,000 | 6,451,000 |
| Basic electricity rates | ¥ | 1,425,000 | 1,702,000 |
| Annual water rates | ¥ | 0 | 0 |
| Annual running costs | ¥ | 4,112,000 | 8,153,000 |
In comparison with the air-cooled chilling system, the chilled tower system offers savings of 16% in terms of power requirement. With regard to annual running costs, the system saves approximately ¥4.0 million (approximately 50%) compared with the air-cooled chilling system, proving that it has major merits of economy.
(Note: These estimates will differ depending on operating conditions.)